[MPlayer-users] Audio and video slowly drifting out of sync

[Rolf Ernst]

On 3/25/2010 3:36 PM, Uoti Urpala wrote:
> On Thu, 2010-03-25 at 10:13 -0400, TJ wrote:
>    
>> When playing HD files encoded with h.264, video progressively goes out of sync
>> with (lags behind) the audio. I tried it on 2 different computers. Here are the
>> commands I used:
>>      
>    
>> I am using MPlayer SVN-r29796-4.3.4.
>>      
>    
>> I was thinking maybe this has something to do with the monitor refresh rate
>> being 60Hz while the video is 59.94Hz.
>>      
> Yes this problem is most likely related to the frame rates. It's a
> limitation of the VDPAU driver (also shared by some other video outputs)
> in MPlayer svn.
>
> Try compiling a player from
> git://repo.or.cz/mplayer-build.git
>
> That has superior VDPAU support and should avoid this problem.
> (Depending on your linux distro there may be precompiled packages
> available in case you don't want to compile yourself.)
>    
Is it drifting out of sync only during playback or also when you seek 
forward. Say you start playback in the middle - is this also out of 
sync? If this is the case I doubt it is related to the display driver 
but happens at encoding time.